Defensive publication

ABSTRACT

A TRACTABLE, AROMATIC POLY(SCHIFF BASE) HAVING THE RECURRING STRUCTURAL FORMULA:   (DI(R-)-1,4-PHENYLENE, (DI(R-)-1,3-PHENYLENE,   WHEREIN R IS INDEPENDENTLY SELECTED FROM H, CL, BR AND Q, Q BEING ALKYL OF 1 TO 3 CARBON ATOMS, AND X IS SELECTED FROM   DI(T-)-1,4-PHENYLENE, DI(T-)-1,3-PHENYLENE   (-AR1-N=CH-AR2-CH=N-)N DI(R)-1,4-PHENYLENE, DI(R)-1,3-PHENYLENE, DI(R)-BIPHENYLENE, 0, S, C0, SO2 AND ALKYLENE &gt;O, &gt;S, &gt;CO, &gt;SO2, AND ALKYLENE OF 1 TO 3 CARBON ATOMS; WHEREIN AR2 IS SELECTED FROM -(DI(T-)-1,4-PHENYLENE)-, -(DI(T-)-1,3-PHENYLENE)-, DI(T)-PHENYL, DI(T-)BIPHENYLENE, DI(T-)NAPHTHYLENE, AND -(AR1-N=CH-AR2-CH=N)NWHEREIN AR1 IS SELECTED FROM   DI(R)-NAPHTHYLENE, AND R-PHENYLENE-X-(R-PHENYLENE -(T-PHENYLENE)2-, -(DI(T-)-NAPHTHYLENE)-(T-PHENYLENE)-X-(T-PHENYLENE)-   (T-PHENYLENE)-X-(T-PHENYLENE) WHEREIN T IS INDEPENDENTLY SELECTED FROM H, OH, OQ, Q, CL AND BR, AND WHEREIN X AND Q ARE AS DEFINED ABOVE; AND N IS HIGH ENOUGH TO PROVIDE A FILM-FORMING MOLECULAR WEIGHT, THE POLYMER HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.2 AND BEING SUBSTANTIALLY FREE FROM CROSSLINKING.

DEFENSIVE PUBLICATTON UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 Oil. 687. The. abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Office makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JANUARY 1, 1974 918 O.G. 10 i wherein Ar is selected from R Q R R Q; @Q

I i R \X R R wherein R is independently selected from H, Cl, Br and Q, Q being alkyl of 1 to 3 carbon atoms, and X is selected from ll 0, S, 0, S02 and alkylene of l to 3 carbon atoms; wherein Ar is selected from wherein T is independently selected from H, OH, 0Q, Q, Cl and Br, and wherein X and Q are as defined above; and n is high enough to provide a film-forming molecular weight, the polymer having an inherent viscosity of at least about 0.2 and being substantially free from crosslinking. 

